3341 search results - page 350 / 669 » On Bounded Queries and Approximation |
206
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CIKM
2009
Springer
16 years 1 months ago
2009
Springer
We study the problem of continuous monitoring of top-k queries over multiple non-synchronized streams. Assuming a sliding window model, this general problem has been a well addres...
182
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VLDB
2001
ACM
15 years 11 months ago
2001
ACM
Estimating the number of distinct values is a wellstudied problem, due to its frequent occurrence in queries and its importance in selecting good query plans. Previous work has sh...
188
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DCC
2000
IEEE
15 years 11 months ago
2000
IEEE
As large-scale databases become commonplace, there has been signi cant interest in mining them for commercial purposes. One of the basic tasks that underlies many of these mining ...
201
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WWW
2009
ACM
16 years 7 months ago
2009
ACM
Ad auctions in sponsored search support"broad match"that allows an advertiser to target a large number of queries while bidding only on a limited number. While giving mo...
209
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SENSYS
2004
ACM
16 years 5 days ago
2004
ACM
Wireless sensor networks offer the potential to span and monitor large geographical areas inexpensively. Sensors, however, have significant power constraint (battery life), makin...